GLSA 200505-04: GnuTLS: Denial of Service vulnerability

http://security.gentoo.org/

Severity:	normal
Title:	GnuTLS: Denial of Service vulnerability
Date:	05/09/2005
Bugs:	#90726
ID:	200505-04

Synopsis

The GnuTLS library is vulnerable to Denial of Service attacks.

Background

GnuTLS is a free TLS 1.0 and SSL 3.0 implementation for the GNU project.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-libs/gnutls	< 1.2.3	>= 1.2.3	All supported architectures

Description

A vulnerability has been discovered in the record packet parsing in the GnuTLS library. Additionally, a flaw was also found in the RSA key export functionality.

Impact

A remote attacker could exploit this vulnerability and cause a Denial of Service to any application that utilizes the GnuTLS library.

Workaround

There is no known workaround at this time.

Resolution

All GnuTLS users should remove the existing installation and upgrade to the latest version:

    # emerge --sync
    # emerge --unmerge gnutls
    # emerge --ask --oneshot --verbose net-libs/gnutls

Due to small API changes with the previous version, please do the following to ensure your applications are using the latest GnuTLS that you just emerged.


    # revdep-rebuild --soname-regexp libgnutls.so.1[0-1]

Previously exported RSA keys can be fixed by executing the following command on the key files:


    # certtool -k infile outfile

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200505-04.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.